There is actually a very sound business case for keeping the
protection limited. Think of what it would be like if you could
lock up a worksheet with bulletproof protection!
For a start these newsgroups wouldn't exist, the information
would be way to valuable to be given away. A cleverly designed
spreadsheet could quite possibly be worth millions of dolllars.
The mind boggles when you consider the possibilities of
being able to lock up a spreadsheet.
Regards
Martin